What area is the SG1 postcode in?

SG1 is a postcode district in Stevenage, Stevenage, East of England, England. It is part of the SG postcode area.

How many addresses are in the SG1 postcode?

The SG1 postcode district covers Stevenage in Stevenage. The exact address count can be retrieved via the APITier Postcode Lookup API.

How do I look up addresses in SG1 programmatically?

Use the APITier Postcode Lookup API: GET https://postcode.apitier.com/v1/postcodes/{postcode}?x-api-key=YOUR_KEY — where the postcode begins with SG1. The response returns all PAF addresses as structured JSON including building name, number, street, town, county, and geocoordinates.

Royal Mail PAF · East of England

SG1 Postcode — Stevenage

SG1 is a postcode district in Stevenage, Stevenage, East of England, England. Use the lookup below to explore addresses within this postcode district.

SG1

Postcode District

SG — Stevenage

Area

East of England

Region

Royal Mail PAF

Data Source

Postcode Lookup — SG1 DistrictSample

{
  "_note": "Sample response — enter any postcode above and click Lookup for live data",
  "status": 200,
  "result": {
    "postcode": "SG1 1AA",
    "quality": 1,
    "eastings": 521422,
    "northings": 267638,
    "country": "England",
    "nhs_ha": "East of England",
    "longitude": -0.2654,
    "latitude": 51.8616,
    "european_electoral_region": "East of England",
    "primary_care_trust": "Stevenage",
    "region": "East of England",
    "lsoa": "Stevenage 001A",
    "msoa": "Stevenage 001",
    "incode": "1AA",
    "outcode": "SG1",
    "parliamentary_constituency": "Stevenage",
    "admin_district": "Stevenage",
    "parish": "Stevenage, unparished area",
    "admin_county": "East of England",
    "admin_ward": "Stevenage Central",
    "ced": null,
    "ccg": "NHS East of England",
    "nuts": "Stevenage",
    "codes": {
      "admin_district": "E07000000",
      "admin_county": "E10000000",
      "admin_ward": "E05000000",
      "parish": "E43000000",
      "parliamentary_constituency": "E14000000",
      "ccg": "E38000000",
      "lsoa": "E01000000",
      "msoa": "E02000000"
    }
  }
}

About the SG1 Postcode District

The SG1 postcode district is part of the Stevenage (SG) postcode area, covering Stevenage and surrounding areas in East of England, England.

Postcodes in the SG1 district follow the format SG1 nXX where n is a digit and XX are letters. Each inward code identifies a specific delivery walk within the district.

The wider Stevenage postcode area (SG) also covers: Hitchin, Letchworth, Baldock, Knebworth, Welwyn.

Frequently Asked Questions

What area does the SG1 postcode cover?

The SG1 postcode district covers Stevenage in Stevenage, East of England, England. It is one of 19 districts in the SG postcode area.

How do I look up all addresses in the SG1 postcode?

Use the live lookup widget above or call the APITier Postcode Lookup API: GET https://postcode.apitier.com/v1/postcodes/{full postcode}?x-api-key=YOUR_KEY. Replace {full postcode} with any complete postcode beginning SG1. The API returns all Royal Mail PAF addresses as structured JSON.

Is SG1 a valid UK postcode district?

Yes. SG1 is a Royal Mail postcode district in Stevenage, England. Full UK postcodes in this district follow the format SG1 followed by a digit and two letters (e.g. SG1 1AA).

SG1 Postcode — Stevenage

About the SG1 Postcode District

Frequently Asked Questions

Other Stevenage Postcode Districts